One-dimensional linear hollow guide vane

Abstract

The invention belongs to the technical field of turbomachines, and particularly relates to a one-dimensional linear hollow guide vane applied to compressors. In order to solve the problem that the damage rate of compressor impellers with guide vanes is high at present, the invention provides the one-dimensional linear hollow guide vane which can reduce the wake vortex, a guide vane body is provided with a groove from a vane root to a vane tip, and the groove is provided with two slots which lead to the trailing edge of the guide vane body. The structure of the one-dimensional linear hollow guide vane is simple, and compared with like products, the one-dimensional linear hollow guide vane has the remarkable beneficial effects that because the section of the groove in the guide vane is round or elliptic, intake is more smooth; the fluidity effect of the two slots of the groove of the guide vane leading to the tailing edge of the guide vane is far better than the fluidity effect of a single slot, the attenuation of the wake vortex generated by fluid passing through the two slots is the fastest, and therefore the effect of reducing the wake vortex is achieved; the original design of the vane is kept from the leading edge to the middle part, flow control needed by the guide vane and a pre-whirl function can also be provided, and therefore the original function of the guide vane cannot be affected by the novel structure.

Description

technical field [0001] The invention belongs to the technical field of turbomachinery, in particular to a guide vane applied to a compressor (pump). Background technique [0002] Compressors are widely used in many fields of the national economy, especially in mining, petroleum, chemical, refrigeration, power and metallurgy, to transport gas and increase the pressure of gas, making centrifugal compressors a variety of compressors in compression and production. The key machine of gas occupies an extremely important position. With the achievements of gas dynamics research, the efficiency of centrifugal compressors has been continuously improved, and the application range of centrifugal compressors has been greatly expanded, and the application range has been greatly expanded. When the centrifugal compressor works in conjunction with the pipe network, it is often necessary to change the gas flow rate and provide the necessary inlet pre-rotation due to the change of requirement...

AI Technical Summary

Problems solved by technology

The addition of the inlet guide vane solves the problems of inlet pre-swirl and flow control, but creates new problems: due to the static and dynamic interference effect between the inlet guide vane and the impeller and the influence of the guide vane wake vortex on the subsequent flow field, the The wake vortex acts on the compressor impeller, causing the impeller to be impacted by the air flow, making it easier to break and causing more serious shutdowns and other problems

The addition of these guide vanes will not only solve the design requirements, but also bring about the dynamic and static interference effects between the guide vane and the impeller and the influence of the guide vane trailing vortex on the flow field. The trailing vortex acts on the compressor impeller, making the The impeller is impacted by the air flow and is more likely to break, causing more serious downtime and other problems

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